Research on Enveloping Boring Method for Inner Spiral Surface of Single Screw Pump Stator;

Design and application of GD135-3 type supper-short single screw pump;

Running faulty and type selection process are introduced for the slurry pump in phosphoric acid tank area, summarization is made for type selection of slurry pump, as well as for application effect after its reformation; by means of reformation for coupling of single screw pump imported, running rate is increased by 1% , phosphoric gain rate is increased by 3%.

This paper analyzes principle of extrusion recycling and characteristics of various applications based on characteristics of PET film and theory of macromolecule melting steam,especially analyzes and makes a comparison of different features and affection for index of pellalier between single screw and twin screw.

An approximate analytical model describing the melt conveying under the effect of single screw vibration was established by using the self-modified Tanner constructive model,and the coefficient reflecting the effect of vibration force field on the apparent viscosity of the melt was formulated according to the theory of equal viscosity dissipation energy.

The extruding molding process of ultrahigh molecular weight polyethylene (UHMWPE) on a single screw extruder was analyzed, while the mathematic equation to calculate the total extruding press and the theory dealing with the melting mechanism of the raw material were established.